user
Tell me how would you respond to the following request.
Construct a timeline of the American Civil War.

assistant
Timeline of the American Civil War: 

1860: Abraham Lincoln is elected President of the United States 

1861: Confederate States of America is formed 

April 12th 1861: Confederate forces fire on Fort Sumter in South Carolina, beginning the war 

July 21st 1861: First Battle of Bull Run fought in Virginia 

September 22nd 1862: Battle of Antietam fought in Maryland 

July 1st-3rd 1863: Battle of Gettysburg fought in Pennsylvania 

April 9th 1865: Confederate General Robert E. Lee surrenders at Appomattox 

December 5th 1865: The Thirteenth Amendment is ratified, abolishing slavery in the United States